Apart from your already-discussed willingness to honestly show both the good and the bad - which is very rare - you also take the time to point out details (like the tour of the deck), talk about the upsides and downsides of each thing, and do it in language that is easy for people to understand. For example, many experienced sailors wouldn't take the time to point out and explain the throttle and the shifter, or the issues with the CP cables, or the anchor swivel. You do - and it's great. And very, very few experienced sailors would walk through mistakes they made...but this is all so critical to the rest of us trying to learn.
You make it easy for people to relate to you...i.e. - not too "expert", but still way more experienced than most of us. It's clear that you just love sailing - like the rest of us - and want to share it with everyone.
Also, you have a very good sense for true documentary-style film making, capturing the experience
as opposed just chronicling the events. Keep that up. That's exactly what was so compelling about your Nightmare series - it's not just the decision/results, it's the decision process
that you show that's so reveting. Even the boredom/cooking/sleeping/messiness down below was all interesting because THAT'S as much a part of the experience
as storms and sunsets.
In this regard, there's another great guy around here named Dylan Winter. He is/was a cinematographer for the BBC and has a GREAT ongoing series called "Keep Turning Left":
His film making is brilliant as well. You should find his stuff on YouTube and talk craft with him. His shooting, editing, and story-telling are all top notch...as is his use of narration, etc.
Keep it coming!